Bewildered wrote:

I though that both the Celeron and the Pentium 4 were 478 pin chips

Yes and no...thanks to Intel changing things so often.

The older Celeron used a 370 pin socket and 100MHz bus, and the newer
chips use a 478 pin socket and 400MHz bus.

I have the same setup on a 1.7 Celeron averaging about 9 hours a unit - a
big improvement on using the GUI - averaged 15 hours!

I think you may be lucky in that the 1.7GHz chip uses a 478 pin socket,
but it only has a 128k cache. But if your motherboard and BIOS supports
it, you can just drop in a 2.xGHx chip and easily cut your speeds in
half or better.

To give you an idea of speed, my P4-2.0GHz chip chews through a typical
work unit in about 3.5 hours.